From: James Edward Gray II <james@...>
Date: 2006-09-07T03:17:41+09:00
Subject: Re: How to take output of eval into a string?

On Sep 6, 2006, at 12:52 PM, Gareth Adams wrote:

> Morton Goldberg <m_goldberg <at> ameritech.net> writes:
>
>>
>> On Sep 6, 2006, at 9:02 AM, Anil Wadghule wrote:
>>
>>> #code
>>> a = "puts 'I like Ruby'"
>>> b = eval(a)
>>> puts b
>
>> Exactly what are you trying to capture into a string?
>
> I would guess that the intention is to capture STDOUT and get b ==  
> 'I like Ruby'

 >> require "stringio"
=> true
 >> a = "puts 'I like Ruby'"
=> "puts 'I like Ruby'"
 >> b = eval("begin $stdout = StringIO.new; #{a}; $stdout.string;  
ensure $stdout = STDOUT end")
=> "I like Ruby\n"

Hope that helps.

James Edward Gray II